I sent you an email with the sc1200 datasheet attached, unfortunately, it bounced back due to large
size. since I don't have access to the target today, I just briefly reply answer your questions and
tomorrow I'll try to post more detailed info from the target as well as the datasheet.
>Hmm bad is that I dont know the hardware.
But from the driver i can see:
for (i = 0; i < MAX_DEVICES; ++i) {
if (base[i] > 0)
rc = scx200_acb_create(base[i], i);
}
And there are two base defined.
So this could create two busses.
When you modprobe i2c-dev and the scx driver you should see
in
i2cdump -l
Listed two ACB busses
Do you see them?
No. I only saw one: i2c-0 with the bus type of unknown. but this doesn't matter. the smbus just works fine
with i2cdump 0 0x50 and 0x51.
i2cdump -l
Installed I2C busses:
i2c-0 unknown netSemi sc1200
>
If so I would suggest:
1) plug your device to ACB 2 where it works
do: i2cdetect (put acb2 bus number here)
i2cdump (put acb2 bus number here) 0xyourdeviceaddr
this works fine. no problem.
>
2) repeat with plugged to ACB1
i2cdump 1 0x57 ( a same type of device is connected to bus 1 with A0,A1,A2 pulled to high )
return with open error. no such device. for i2c-1. ( the i2c node: 0 to32 under /dev/ do exist).
Error: Could not open file '/dev/i2c-1': No such device
one question for you: if let's say:
the acb1 has been configured to use different protocol other than acb2, how can I find out and reconfigure
the acb1 to be the same as acb2 ?
appreciated your help.
howard
